1
Question
In the figure, let x denotes the number of steps and y denotes the number of matchsticks used. Find the relationship between x and y by tabulation.
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Solution
In the figure, when x = 1, y = 1
x = 2, y = 4 ; x = 3, y = 7 ; x = 4, y = 10
[1 mark]
x
1
2
3
4
y
1
4
7
10
The relationship between x and y is y = 3x - 2
[ 1 mark]
In the figure, when x = 1, y = 1x = 2, y = 4 ; x = 3, y = 7 ; x = 4, y = 10
[1 mark]
| x | 1 | 2 | 3 | 4 |
| y | 1 | 4 | 7 | 10 |
[ 1 mark]
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